Tobacco-feeding device for cigarette-machines.



M. c. GRAHL. TOBACCO FEEDING DEVICE FOR CIGARETTE MACHINES. APPLICATION FILED JAIL 18, 1911 1,003,178, Patented Sept. 12, 1911.

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UNITED STATES, PATENT OFFICE.

MAX CLEMENS GRAHL, or nnEsnEN-LoBTAU, GERMANY, ASSIGNOR TO UNIVERSELLE- GIGARETTEN- MASCI-IINEN- INDUSTRIE sYsTEM oTTo BERGSTRASSER, ALFRED KLINGE, A FIRM, or nEEsnEN-LoBTAU, GERMANY.

TOBACCO-FEEDING DEVICE FOR CIGARETTE-MACHINES.

Specification of Letters Patent.

Application filed January 18, 1911.

To all whom it may concern.

Be it known that I, MAX CLEMENS GRAHL, a citizen of the German Empire, residing in Dresden-Lobtau, Kingdom of Saxony, in said Empire, have invented certain new and useful Improvements in Tobacco- Feeding Devices for Cigarette-Machines, of which the following is a specification.

This invention relates to that type of tobacco-feeding devices for cigarette-machines in which the tobacco is taken from the hopper in such a manner that it is first taken up by a pin-roller and that the layer of tobacco formed thereon is removed by a second or clearing-roller, so as to make the layer of tobacco of uniform thickness throughout its parts.

In the present invention the clearing-roller turns in the same direction as the feed-roller and has pins which are inclined in the direction of motion of the clearing roller so as to take part in the feeding of the tobacco in connection with the pins which are located on the circumference of the feed-roller and inclined in the direction of motion of the feed-roller. By this arrangement the clearing-roller with its pins also takes the tobacco from the hopper and feeds it to the delivery spout, which is located below the rollers. Clearing-roller has therefore the double function of a clearing and feeding-roller. By this function, the layer of tobacco is not only uniformly shaped by the feed-roller, but also any irregularities in the thickness of the layer are evened up by the tobacco supplied in a second or auxiliary stream by the second or clearing-roller.

The invention consists therefore more specifically in the construction of the tobaccofecding hopper, the feed-roller and clearingroller within the same, the evening-up roller for the clearing-roller, and rotary clearers for said rollers, as will be fully described hereinafter and finally defined in the claims.

In the accompanying drawings, Fig. 1 represents a vertical section through a tobacco-feeding hopper of a cigarette-machine, Fig. 2, a side-elevation of the same, showing the transmitting gearing for the different rollers, and Fig. 3 is a detail-section showing the relative position of the feed and clear ing-rollers toward each other.

Similar letters of reference indicate corresponding parts.

Referring to the drawings, a represents a tobacco-feeding hopper, and c a feed-roller which is mounted on the shaft 6. The shaft 2) is driven from the driving-shaft A by means of the usual gear-wheel transmission. On the circumference of the feed-roller c are arranged pins which are inclined in the direction of motion of the roller, as indicated by the arrow on the same.

A second clearing-roller m, which is mounted on the shaft Z receives rotary motion from the shaft 6 of the feed-roller c by means of a suitable gear-wheel transmission. The two rollers c and m are rotated in the same direction, and the pins of the clearingroller m are inclined in the direction of its motion, as indicated by the arrow on the same. The speed of the roller m is somewhat slower than the speed of the feed-roller 0. Both rollers are so arranged relatively toward each other that the inclined pins on their circumferences are made to alternate with each other so as to enter into the spaces between the pins, as shown in the detail Fig. 2.

Adjacent to the clearing-roller m is arranged a second clearing-roller g which is mounted on the shaft 1" that receives rotary motion from the shaft Z in the same direction as the clearing-roller m by the transmitting gear-wheels s, 25, u. Adjacent to the feed-roller 0 and to the clearing-roller m, are arranged cam-shaped clearers o and w to which a quick rotary motion is imparted by means of belt and pulley-transmissions, which are shown in dotted lines in Fig. 1.

The operation of my improved tobaccofeeding device is such that the tobacco placed in the hopper a is first taken up by the feed-r0ller c; the pins of the clearingroller m then remove the surplus from the feed-roller 0 so that a uniform layer of tobacco is formed thereon. The clearingroller m conducts the tobacco taken up from the feed-roller 0 simultaneously with tobacco taken from the hopper into the narrow'channel a" formed around the clearing-roller m, while the second clearing-roller 9 serves as an evening-up roller for the clearing-roller m for returning the excess of tobacco back into the hopper. By the rotary clearers o and w, the tobacco is combed away from the rollers c and m and dropped in two streams, a main-stream and an auxiliary stream on to the apron y arranged in the dischargeroller, a clearing-roller, said rollers being rotated in the same direction but at diflerent speeds, clearer-pins on the feed and clearing-rollers inclined in the direction of motion of the rollers, the pins on one roller v entering into the spaces between the pins on the other roller, rotary clearing-cams, one for the feed-roller and one for the clearing- I roller, and a delivery-spout below the rollers at the lower part of the hopper for delivering a uniform layer of tobacco to a suitable conveyer-apron below the spout.

2. A tobacco-feeding device for cigarettemachines, comprising a feed-hopper, a feedroller having pins at its circumference, a clearing-roller also provided with pins at its circumference, said pins being inclined in the direction of motion of the rollers, one set of pins being arranged in staggered relation from the other set so as to enter into the spaces between each other, an ey eningup roller for the clearing-roller, rotary clearing-cams for the feed and clearing-rollers, and a delivery-spout at the lower part of the feed-hopper for conducting a mainstream and an equalizing feed of tobacco to a conveying-apron below the spout.

In testimony, that I claim the foregoing as my invention, I have signed my name in presence of two subscribing witnesses.

MAX CLEMENS GRAHL.

Witnesses O'rro WoLrr, RICHARD IFFERTE.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. C. 

